You make regular money from it, you're a pro....you don't, you're an amateur.

Not saying pro is better...I know many amateurs who are better and more serious about photography than most of the pros I have met.

I used to be proud to say I wasn't a pro...but I got a job offer I couldn't refuse so now it's my day job.

What if you do photography and make regular money from it but have another part time job from which you earn more money?

I'm not picking an argument with you - rather I suggest that we could discuss this topic forever and never come to a definition or conclusion. In short, the time would be better spent doing anything else - particularly photography even if we didn't earn any money from it. There are so many lame topics on photo forums (not just this one) that it makes my head spin and my eyes water.